Unfortunately, the threads on my drive side cranks are damaged. I'm looking for some other way to remove the cranks. I know that with skill and the right tools, I could file off the first few threads. However, I don't think I have the skill for this. THis is my idea.
Could one loosen the cup and lockring on the non-drive side as far as possible, then strike the spindle with a hammer? The fixed cup on the drive side would push the crank off of the spindle.
Any other ideas for removal of a crank with damaged threads? The crankset is being replaced with a sealed bottom bracket, so destructive removal is a possibility.